Uli Sigg’s Formidable Collection at M+ Is a Beacon of Hope in a Changing China—Even If a Particular Ai Weiwei Work Is Notably Absen – via artnet news Tweet Uli Sigg’s Formidable Collection at M+ Is a Beacon of Hope in a Changing China—Even If a Particular Ai Weiwei Work Is Notably Absen – via artnet news